Enable rolling deployment for non major upgrades

Describe the issue As of the recent upgrades of RHSSO, the deployment strategy has been set to recreate. This force all small changes to result in service downtime.

Additional context

ocp template: https://github.com/bcgov/ocp-sso/blob/master/openshift/sso74-x509.yaml#L126
pipeline re-enforcement: https://github.com/bcgov/ocp-sso/blob/master/.pipeline/lib/deploy.js#L135-L138

Definition of done

update template to use rolling with proper configs
test in sandbox instance

bcgov / ocp-sso

Enable rolling deployment for non major upgrades #106